ZIP code 77470: Rock Island, TX
77470 is a ZIP code in Rock Island, Texas, mainly in Colorado County. About 414 people live here.
- Population
- 414
- Median household income
- $43,149
- Typical home value
- $122,800ACS median value
- Median rent
- —gross, per month
- Median age
- 49.2
- Homeowners
- 94.7%of occupied homes
Shaded: ZIP code 77470's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 77470 details
| City | Rock Island |
|---|---|
| State | Texas |
| County | Colorado County |
| Metro area | Not in a metro or micro area |
| Time zone | Central Time (UTC−6), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 28.5 sq mi, plus 0.4 sq mi of water |
| Population density | 15 people per sq mi |
| Bachelor's degree or higher | 10.4% of adults 25+ |
| Average commute | 60.3 minutes |
| Center coordinates | 29.53382, -96.53266 |
ZIP codes near 77470
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 77412 | Altair, TX | 4.8 mi | 6 |
| 77442 | Garwood, TX | 7.0 mi | 1,123 |
| 77475 | Sheridan, TX | 8.6 mi | 431 |
| 78934 | Columbus, TX | 11.9 mi | 6,731 |
| 78943 | Glidden, TX | 12.0 mi | 886 |
| 77434 | Eagle Lake, TX | 12.9 mi | 3,970 |
| 78935 | Alleyton, TX | 12.9 mi | 734 |
| 77460 | Nada, TX | 13.0 mi | 76 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 77470?
A typical home in ZIP code 77470 is worth about $122,800 (ACS median value). The median household here earns $43,149 a year. See what buying here would cost per month, with Texas average taxes and insurance filled in.
Monthly payment for a $122,800 homeWhat can a $43,149 income afford?Rental property numbers
About ZIP code 77470
What city is ZIP code 77470?
ZIP code 77470 is in Rock Island, TX, in Colorado County.
What county is ZIP code 77470 in?
77470 is mainly in Colorado County, Texas.
What is the population of ZIP code 77470?
About 414 people live in ZIP code 77470, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 77470 in?
77470 is in Central Time (UTC−6). It observes daylight saving time.